Korean research team develops world’s highest performance next-generation solar cell… Nature cover paper selection

Enter 2021.02.25 01:00

Perovskite to replace silicon
Dr. Jang-won Seo achieves the world’s highest photoelectric efficiency–

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Korean researchers raised the performance of’Perovskite Solar Cell’, which is attracting attention as a next-generation solar cell, to the world’s highest level, and was published as a cover paper in the international journal Nature on the 25th.

The Korea Research Institute of Chemical Technology announced on the day that the research team of the Ph. Photoelectric efficiency is the rate at which a solar cell absorbs light and converts it into electricity, and is an indicator of the performance of a solar cell.

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Perovskite refers to materials in which two cationic substances and one anionic substance are combined in a lattice structure. The properties vary depending on which cations and anions are composed. Solar cells made of perovskite are expected to have higher photoelectric efficiency than existing silicon solar cells (up to 26.7%), and academic research continues. Recently, the government also announced the’Renewable Energy 3020 Implementation Plan’, predicting that perovskite solar cells will replace silicon solar cells.

The research team developed materials for the transport layer in which electrons and holes (empty spots of electrons) can easily move between two electrodes. The easier the electrons and holes move, the less power loss is, the higher the photoelectric efficiency of the solar cell.

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The solar cell of 1㎠, which increased the area by 10 times, also succeeded in achieving a relatively high efficiency of 23%. It is an evaluation that it has made progress in research on the large area necessary to commercialize perovskite solar cells. In addition, to make the existing perovskite solar cell, a high temperature environment of 500°C was required, but the research team succeeded in manufacturing it at only 150°C.

The research team has already been recognized by the U.S. New and Renewable Energy Research Institute in September 2019, and the research team summarized the research contents of the technology and materials required for this and published it in Nature on this day. Dr. Seo said, “If further research is done in the future, we expect to be able to exceed the highest efficiency of 26.7% of the current silicon solar cell.”

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